After a false trip incident, I heard a control engineer express his displeasure with the automatic diagnostics in a new safety rated transmitter. The transmitter diagnostics were annunciated by sending the analog current out of range. In this case, the current went to 3.6 milliamps. The problem was that…
exida explains Blog
Entries tagged with: Alarm
- by Todd Stauffer
- Thursday, March 22, 2012
- Alarm Management
To Be an Alarm…Or Not to Be?
That is the question.
When your alarm does not meet the definition as defined in the ISA-18.2 standard and/or the criteria established in your alarm philosophy document, it is not an alarm.
By ISA-18.2 definition “an alarm is an audible and /or visible means of…